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(No Model.) 4: Sheets-Sheet '1.

A. HITZERT. BARREL HEAD MACHINE.-

No. 568,978 Patented 0m. 6, 1-896.

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(No Model.) 4 Shets-Sheet 2.

A. HITZERT.'

BARREL HEAD 'MAGHINB.

No. 568,978. PatentedOct. 6, 1896.

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4 Sheets-Sheet 4. A. HITZERT. BARREL HEAD MACHINE;

( No Model.)

No. 568,978. Patented Oct. 6, 1896.

.Dwfwdofi Wharf x mas ca. wom-uwa. WASHINGTON. o c,

UNITED STATES PATENT OFFICE.

ALBERT HITZERT, OF SAGINAYV, MICHIGAN, ASSIGNOR OF ONE-HALF TO JACKSON &CHURCH, OF SAME PLACE.

. BARREL-HEAD MACHINE.

SPECIFICATION forming part of Letters IPatent No. 568,978, dated October6, 1896.

Application filed April 8, 1895. Serial No. 544,921. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT HITZERT, a citizen of the United States,residing at Saginaw, in the county of Saginaw and State of Michigan,have invented certain new and useful Improvements in Barrel-HeadMachines, of which the following is a specification, reference being hadtherein to the accompanying drawings.

The invention consists in the construction of a machine designed forcutting barrelheads from blanks of lumber, and especially in theconstruction of a cutter arranged above the blank, with means forclamping the blank upon the table and means for moving the cutter intoand out of the work to out both bevels and cut out the head from theblank; further, in cross-bars for the carrier having adjustable sectionsor plates on their front face, by means of which the different boardscomposing the blank may be adjusted in relation to the cutting-line tocut out the knots as far as possible; further, in the holding orclamping devices for the work, and in the construction, arrangement, andcombination of the various parts, as more fully hereinafter described.

In the drawings, Figure 1 is a side elevation of my improved machine.Fig. 2 is an end elevation thereof. Figs. and 4 are cross andlongitudinal sections illustrating the connection between feed-chainsprocketwheels and their drive-shaft. Fig. 5 is a horizontal sectionjust above the line of the table. Fig. 6 is a perspective view of thelefthand end of the machine as shown in Fig. 5. Fig. 2 is aplan of apart of the table, showing the indicator and showing in section one ofthe carrier-bars. Fig. 8 is a horizontal section through one end of oneof the carrierba-rs, illustrating the action of the releasing device forthe adj Listing-plates for the blanks. Fig. 9 is a vertical sectionalelevation ill ustrating the drive connection from the driveshaft to themachine. Fig. 10 is a perspective view illustrating the actuating-leversfor the side-work clamps. Fig. 11 is an enlarged vertical sectionthrough the cutter-head and the table beneath the same, partly in eleva-Fig. 12 is an enlarged elevation of one Fig. 13 is a section thereoftion. of the cutters.

Fig. 14 is a perspective view of the cam-plate which actuates thework-holding dogs and receding'saw-ring in the table. Fig. 15 is adiagram of the actuating levers therefor. Fig. 16 is an elevation of theratchet-wheel and pawl for actuating the carrier. Fig. 1.7 is across-section through the locking meehan? isin for the carrier.

20 is a suitable frame, having the table 21 at the top. 22 aresprocket-chains running over the sprocket-wheels 23 at opposite ends ofthe machine and connected by the carrier-bars 24, which are adapted tofeed the blanks along thetable.

25 is the shaft for one pair of the sprocketwheels. On this shaft is thesleeve 26, Figs. 3 and 4, to which sleeve the sprocket-wheels aresecured.

27 is a fingersecured to the end of the shaft 25, and 28 is a fingersecured to the end of the sleeve, the ends of the two fingers being inline, and are adapted to be adjusted in relation to each other by theadjusting-screws 2!) 30. This adjustment enables me to adjust thecarrier-chain to bring the cross-bars in proper relation to the otherparts of the machine. The carrier is intermittently actuated through aratchet-wheel 19 and a pawl 31 on the lever 18 and gearing 32 to theshaft 25, the pawl being actuated from a crank connection with thehorizontal shaft 35, Figs. 1 and 2, which Ishall call the camshaft, asit carries the cams for actuating the mechanism in the device. Thisshaft is provided with the worm-wheel 36, with which a worm 37, Figs. 1and 2, on the vertical shaft 38 engages. I preferably lock the carrierin the intervals between its movement, and accomplish this by thedevices shown in Figs. 16 and 17.

140 is an extension of the lever. 18 beyond its pivot.

141 is a springlatch-pin adapted to engage in the dents 142 in the faceof the ratchetwheel 19. This latch-pin is supported on the arm 143beside the wheel and has a collar or shoulder 144 near its inner end.

The extension 140 of the lever has the upwardly-extending lugs 145,having the outer beveled face 146, as shown in Fig. 17. lVhen the partsare as shown in Fig. 16 and in dotted lines in Fig. 17, the end of thelever keeps the latch from engagement with the detent in theratchet-wheel, but as soon as the lever moves it withdraws from thelatch, which is held against the face of the wheel. hen the wheelreaches the end of its movement caused by the rocking of the lever 18,the pin will engage in one of the detents and hold it (and the carrier,which is geared to the shaft of the ratchet wheel) against movementwhile the lever is returning. As the lever returns the bevel-faces 146,engaging beneath the collar 144, will lift out the pin, and thus freethe ratchet-wheel for its next movement.

The shaft 38 at its top is provided with the horizontal circular disk 39above the yoke 40. (See Figs. 2 and 9.)

41 is a horizontal shaft slidingly journaled in bearings in the yoke 40,being adjustable longitudinally by means of the lever 42, this leverhaving means to engage the segment 43 to hold it in its adjustedposition. On the shaft 41 are two friction-Wheels 44 and 45. The wheel44 bears against the upper face of the disk 39, and the wheel 45 bearsagainst the under face of a disk 46 on the end of the main drive-shaft47, driven from any suitable source of power. This shaft 47 may belifted to raise the disk 46 from engagement from the wheel 45. This Ihave shown as accomplished by the rock shaft 49, connecting, through alever 50, to a collar 51 on the shaft.

It is evident that the feed devices of the machine may be stopped orstarted by raising or lowering the disk 49 through the connectiondescribed. It is also evident that'the speed of the cam-shaft may bevaried by adjusting the shaft 41 in or out.

55 is a fence at one end of the table, behind which are piled the boardsor blanks 56, from which the heads are to be out. (See Fig. 6.) Eachblank is composed of two, three, or more boards, as plainly shown inFigs. 5 and 7. The bottom of the fence is raised sufiiciently above thetable to permit the bars of the carrier to pass beneath and ispreferably provided with an adjustable board 55. As the blank passesfrom the fence it is trimmed to a proper width by the 'saw 57, driven bysuitable belt connection from the drive-shaft 47, the waste beingseparated from the blank by the splitter 58.

is a ring supported by the bracket 61 above the table in such relationto the cutters that the carrier will stop the blank beneath the ringbefore feeding it to the cutters in the precise relation to the ringthat the subsequent movement of the carrier will bring the blank to thecutters. This enables the operator standing beside the ring to examinethe blank and ascertain if there are any knots in the line of thecutters and, if so, to adjust one or more of the sections or boards toget the knots out of the line of the cutters or cut the head to leaveout the knots at the ends of the boards. This adjustment I accomplish bymeans of the plates 62, Figs. 5, 7, and 8', forming complementaryportions of the front face of the carrier-bars 24, and having stems 63,projecting through apertures in the bars. These stems have ratchet-teeth64 on one side, with which the toothed collars or dogs 65 on shafts 66are adapted to engage to hold the plates in their adjusted positions.

67 are springs for holding the dogs in engagement. 68 are flat springsengaging between pins 69 on the stems, acting to return the plates totheir initial position when the dogs are released.

70 are end projections of the shafts 66 beyond the end of thecarrier-bar.

The operator pushing on one of the stems 63 may push out the plate 62until the knot is out of the line of the cut, asshown in Fig. 7, and thedog 65 will hold it in such position until the blank has been operatedon by the cutters, when the dogs will be released by striking anydesired abutment which will force. in the shafts 66 to release the dogs65 from the ratchet-teeth on the stems. These shafts may strike the sideclamps 71 to trip the dogs. After the blank has been adjusted asdescribed, the next feed motion of the carrier brings the blank upon theend section of the table beneath the cutters, the operation andconstruction of which I will now describe.

Figs. 11, 12, and 13 show the cutters and the table beneath the same.

75 represents the clamping-section of the table, circular in form.

76 is a pin on the journal 77, supported by the pin 78 in thestirrup-shaped bracket 79, secured to the under side of the table.

80 is a plate or disk journaled on the journal 77 and havingsuitably-shaped cam-faces 81 82 on its upper and lower faces adapted tobear against complementary faces on disks or heads 83 S4. The disk 83rests on the plate 80 and carries the adjustable pointed pins or dogs85, engaging in apertures 86 in the clamping-section 75 of the table.The disk or head 84 is held in contact with the plate 80 by the springs87 beneath.

S8 is a lever or arm on the plate 80, connected by suitable levers witha cam 90, Fig. 2, by means of which the plate 80 isintermittentlyrocked, so that its cam-faces will simultaneously depressthe disk 84 and elevate the disk 83, forcing the dogs up into the blankon the top of the section 75. To the edge of the disk 84 are secured thevertitical pins 91, carrying at their upper ends the ring 92. forms acomplementary part of the table, but when lowered, as shown in Fig. 11,leaves a circular groove or recess in the table-top below the blank,into which the edges of the cutters can enter. This ring I shall callthe receding cutter-ring, that is, a ring-shaped section of the tablethat recedes before the cutters below the table-top.

is a clamping plate secured to the lower This ring in its upper positionend of the vertical shaft 96. At its upper end this shaft has connectedto it the lever 97, supported on the standard 98 and connected throughthe rod 99 with the cam 100 on the cam-shaft 35.

10l is a spring acting to hold down the shaft 96 and its clamping-plate.

is a hollow shaft journaled in vertical bearings in the standard 98 andthrough which the shaft 96 projects.

107 is a pulley on the shaft 105, driven from the drive-shaft 17.

108 is a lever engaging the collar 109, embracing the shaft 105, thecollar being feathered on the shaft 105. This lever is connected withthe cam 110 on the cam-shaft, by means of which it is intermittently.actuated to intermittently vertically reciprocate the collar 109 uponthe shaft 105.

is the cutter-head secured to the lower end of the shaft 105 andprovided with radial slots or guideways 116, in which engage theinclined brackets 117. I have shown four of these brackets. Each bracketis adjusted in the ways and held in its adjusted position by means ofthe radial adjustingscrew 118, engaging a screw-threaded bearing on thebracket, and an ear 119 on the head.

4 120 are radial rock-shafts supported on ears 121 on the head 115 andbracket 117, said shafts passing through the hubs of bevel gearwheels122, journaled in the upper end of the brackets.

I provide a spline on the gear-wheel and a keyway 123 on the shaft topermit the adjustment of the gear-wheel on the shaft while constantlymaintaining a drive connection between them. Each shaft is rockedthroughthe rock-arm 124, connected by the link 125 to the collar 109.

125 are shafts journaled in inclined bearings in the brackets 117 havinga bevel-pinion 126 at the upper end, engaging the'bevel gear-wheel 122,and at its lower end carrying the cutters.

127 is the cutter-head secured on the end of the shaft 125". 128 is acutter thereon secured by the screw-bolt 129 and acting to cut the upperbevel on the head.

129 is a sector-shaped convex disk having the curved sawtoothed section130 on one edge eccentrically arranged in relation to its axis, theshaft 125', to the end of which it is secured by the nut 131.

The raising and lowering of the collar 109 will, through the connectionsdescribed, rock the shaft 120 and the shaft 125 and its cut-' ters, asshown in full and dotted lines in Fig 12, into and out of the work. Asthe toothsection 130 on the disk or saw cutter projects below the cutter128, and as these cutters are brought into work at an obtuse angle tothe plane of the blank, the saw-teeth will out under the blank and cutthe under bevel while the cutter 128 cuts the upper bevel of thebarrel-head, the head and its cutters being constantly revolved, throughthe connections described.

The operation of the device is as follows: The operator fills the fencewith blanks or boards, as shown in Fig. 6, the machine, properlyadjusted, is set in motion, the carrier first takes the lower blank fromthe fence, past the saw 57, which trims it, and at the next intermittentfeed under the marker 60, when the blank is adjusted to cut out theknots, as described. The next movement brings the blank upon thecutter-section of the table. The sections or boards I preferably clamptogether, while being cut, by side clamps 71, actuated by the leversystem shown in Fig. 10, and the cam 133 on the camshaft, these clampshaving a spring 134 to withdraw them when the head is cut. I alsopreferably clamp down the corners by the lever-clamps 135, Figs. 2 and5, secured to and operated by the shaft 96. At the same time the clampsabove described are applied, the clamping-head 95 is lowered, the dogs85 are pressed up into the blank, and the receding ring 92 lowers.Simultaneously the collar 109 is lowered and puts the cutters to workupon the blank, as described. The parts then return to their initialposition, the dogs retract, the ring 92 is lifted, the carrier feeds outthe formed head, and a new blank is fed in and the operation repeated.

The cams on the cam-shaft and the levers and connections are soconstructed as to properly time the operation of the parts to effect thework as described.

I may, and preferably do, connect the springs 136 to the side clamps 71,these springs bearing against the sides of the work while under themarker 60.

\Vhat I claim as my invention is 1. In a barrel-head machine, a carriercomprising carrier-chains, a cross-bar, a series of adjustable plates orheads on the front face of the cross-bar, dogs for holding the plates intheir adjusted position, means for tripping the dogs and means forreturning the plates, substantially as described.

2. In a barrel-head machine, the combination of a carrier having chainsand cross-bars,

a series of adjustable plates or heads on the.

front face of the cross-bars, springs acting to hold the plates in theirinitial position, dogs for holding them in their adjusted position, andmeans for tripping the dogs, substantially as described.

3. In a barrel-head machine, a carrier, the cross-bars thereon, theheads 62, having ratcheted stems 63 passing through the cross-bar,springs 68 for holding the heads in their initial position, thespring-pressed rods 66,having toot-bed dogs 65 adapted to engage theratcheted stems, and means for shifting the rods 66, to release the dogsin the travel of the carrier. 4. In a barrel-head machine, the combination of an intermittently-actuated carrier,

cross-bars thereon, having adjustable heads or plates on the front face,and an indicator such as the ring (30, in the relation and for thepurpose described.

5. In a barrelhead machine, the combination of the table theintermittently-actuated carrier comprising the connecting cross-barsrunning over the table, a fence at one end of the table, having itsbottom edge elevated above the table the width of the blanks, theadjustable plates on the front face of the cross-bars, the trimming-saw,57 at one edge of the table, the cutters, and the indicator, such as thering 60, between the fence and cutters.

6. In a barrel-head machine, the combination with endless-carriersprocket-chains, clamping device, cutters, and means for actuating thesame, of sprocket-wheels over which the chains pass, a shaft on whichthe .wheels at one end are mounted, a sleeve on which the oppositewheels are mounted, a shaft passing through the sleeve, and means foradjusting the sleeve transversely of the shaft and locking the same inits adjusted position, comprising a finger on the shaft, a finger on thesleeve, and an adjusting means connecting the fingers, substantially asdescribed.

7. In a barrel-head machine, the combination of suitable clamps for thelumber, of a revolving cutter-head above the work, and cutters thereoncomprising separate blades arranged one in advance of the other unitedand arranged at an obtuse angle to the plane of the work and means formoving the cutters into the work to cut out and to cut both the bevelson the edge of the head.

8. In a barrel-head machine, the combination of suitable clamps for thelumber, of cutters comprising separate cutting-blades the cutting edgesof which are arranged one in advance of the other and the whole abovethe work, arranged at an obtuse angle to the barrel-head, means forrevolving the cutters and for moving them into and out of the work toout both the bevels as described.

9.. In a barrel-head machine, the combination with suitable clamps forthe lumber, of a rotary cutter-head above the work, curved disk cutterssecured at the edges of-the head at an obtuse angle to the barrel-head,having eccentrically-arranged saw-teeth thereon and means for rockingthe cutters to bring the teeth in and out of the work.

10. In a barrel-head machine, the cutter comprising a head, aconcavo-convex sectorshaped disk, a pivotal support therefor andcutter-teeth eccentrically arranged at one edge of the disk a supportfor the head and means for actuating the cutters.

11. In a barrel-head machine, the combination of the cutter-head, theinclined shaft such as 125 thereon, the cutter 12S thereon, the curveddisk 129, having eccentrically-arranged teeth at one edge, and means forrocking the shaft to bring the cutters into and out of the work.

12. Ina barrel-head machine, the combina tion of the cutter-head, havinga revolving radial guide therein, an inclined bracket adjustably securedin said guide, a shaft journaled in said bracket, carrying the cuttersat its lower end, and means for rocking the shaft to bring the cuttersinto and out of the blank or work.

13. In a barrelhead machine, the combination of the revolving cutterhead, the radial rock-shafts thereon, the inclined shafts at the outeredge of the head, the eccentrically-arranged cutters at the lower endthereof arranged eccentric to the rock-shaft a gear connection betweenthe two shafts, and means for rocking the rock-shaft for the purposedescribed.

let. In a barrel-head machine, the combination of the revolvingcutterhead, the inclined brackets 117 thereon, the inclined shaftsjournaled in the brackets, the eccentrically-arranged cutters at thelower end of the shafts arranged eccentric to the rock -shaft,horizontal shafts journaled on the head and extending to the brackets, agear connection between the two shafts and means for actuating therock-shaft.

15. In a barrel-head machine, the combination of the table a verticalrevolving hollow shaft above the table journaled in stationary bearings,carrying the cutter-head at its lower end, a shaft extending through thehollow shaft, a clamping-disk at the lower end of the shaft, means forintermittently reciprocating the inner shaft, cutters on the head andmeans for moving the cutters upon the head intermittently in and out ofthe work.

16. In a barrel-head machine, the combination of the hollow shaft 105,carrying the cutters, the reciprocating shaft 96 within, theclamping-plate at the lower end thereof, and the corner-clamps 135,connected to and operated by the shaft 96, substantially as described. v

17. In a barrel-head machine, the combination of the table, the movableclamp above the table, of a series of dogs normally beneath the table,and devices for moving them up 18. In a barrel-head machine, thecombina- 7 tion of the table, the movable clamp above the table, thedisk 83 below the table, the adjustable pointed dogs or pins 85 at theedges of the disk entering apertures in the table and normally below thetop thereof, and intermittently-actuating devices for the disk to raisethe dogs above the table, for the purpose described.

10. In a barrel-head machine, the combina tion with the table, thefeeding devices for the material on and over the table and thereciprocating cutters above the same as described, the ring 92 in thetable below the cutters,

spring-supported disk 84 car'ryinQ: the ring, the dogs 85, the disk 83carrying the dogs and the intermittently-actuated cam-plate 80 I 5between the two disks, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

ALBERT HITZERT. Witnesses:

WM. A. BROWN, JOHN L. JACKSON.

